Valve



Sept. 29, i931. H. w. DURHAM ET AL, 1,825,512

VALVE Filed March 6, 19529 2 Sheets-Sheet l Sept. 29, 1931. H. W. DURHAM ET AL, 1,325,512

VALVE Filed March 6, 1929 2 Sheets-Sheet 2 Patented Sept. 29, 1931 UNITED STATES PATENT OFFICE HERBERT W. DURHAM AND CHARLES M. BUCKER, OF LOUISVILLE, KENTUCKY VALVE Application filed March 6,

This invention relates to new and useful improvements in valves. i

An object of the invention comprehends the provision of a valve member having a multiplicity of inlet ports.

Another object of the invention contemplates a discharge port in the valve member in communication with all olf the inlet ports.

More specifically stated the various inlet ports are of different sizes to regulate the egress through the discharge port.

With the above and other objects in view, the invention further -consists of the fol- 15 lowing novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is a fragmentary longitudinal sectional view taken through a car and illustrating the application of the present invention thereon for use in conjunction therewith.

Figure 2 is a sectional view taken through the valve mechanism and the inlet and discharge pipes connected therewith.

Figure 3 is a front elevation of the valve structure.

Figure 4 is a horizontal sectional view taken on line 4-4 of Figure 2.

Figure 5 is an elevation of the bearing sleeve for the valve member.

Figure 6 is a view similar to Figure 5 of the valve member per se.

Figure 7 is an end elevation of the valve member.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character 10 indicates a main train pipe having a T-coupling 11 upon one end for connection with a lpipe member 12 including a valve structure 13 upon its opposite end wholly disposed within the car 14, preferably adjacent the rear platform thereof, as evidenced from the illustration of our invention in Figure 1 of the drawings.

A branch pipe 15, having connection with 1929. Serial No. 344,793.

the remaining attaching sleeve of the T-coupling 11, carries a flexible air hose 16. A back-up hose 17, carried upon the opposite end of the flexible air hose, also includes a valve structure 18, after the manner of the pipe 12.

As a foreword to the description of our invention set out in the following, it is to be understood that the particular type of valve is to be used in the air brake systems v of railway rolling stock especially when a line of cars is backed upon a siding. The conductor or brakeman, whether the line of cars are coaches or freights, may actuate the brakes from the end car whereby damage, incident to collision with other cars on the same set of tracks, is obviated.

In carrying out our invention, we provide a four-way coupling 19 having connection upon two of its sides, preferably in diametrically disposed relation, with inlet and discharge pipes 20 and 2l respectively.

A sleeve member 22, carried within the coupling 19, also provides a bearing for a tapered valve member 23. Ports 24, and 25, of elongated formation, and located within diametrically opposite sides of the sleeve or bearing 22, are constantly in communication with the inlet and discharge pipes 20 and 21 respectively.

A cover plate, such as indicated at 26, carried upon one end of the coupling 19, adjacent the smaller end of the valve member 23, is centrally apertured to accommodate a reduced extension 27 projecting aXially of the longitudinal center thereof. Fastening elements 28, carried by the cover plate 26, are threadedly engaged with the coupling 19 and sleeve 22 therein at the points of intersection therebetween, substantially as evidenced from the sectional view in Figure 2 of our drawings. The fastening elements will retard rotation of the sleeve 22 in conjunction with the valve member 23 whereby the ports or openings 24 and 25 therein will be held in constant alignment with the inlet and discharge pipes. A squared portion or wrench engaging portion 29 formed upon the outermost projecting portion of the reduced extension 27 of the valve member 23, is adapted for reception within the socket end of an operating lever 31.

A spring pressed pawl 32, carried by the operating lever or handle 31, terminates to provide a pointed extremity 33 adapted for reception within any one of a plurality of notches 34 arranged at spaced intervals upon the peripheries of the cover plate 2G. A threaded extremity 35, projected from the squared or wrench engaging portion 29, carries a nut 36 thereon to retain a washer 37 against the outer portion of the socket end 30 of the operating lever or handle 31 in position for use.

The elongated ports 38, 39 and 40 longitudinally disposed with relation to the valve member 23 and extended for appreciable depths therein, are also disposed at spaced intervals and which correspond to the lo lation of the respective notches 34 in the periphery of the cover plate 26.

rlhe valve member 23, is in addition, provided with a discharge port 41 common to all of the ports 38, 39 and 40, which will be hereinafter referred to as the inlet ports or as the service port, the holding port and the emergency port respectively.

As shown in Figure 4 of the drawings, the common discharge port 41 is shaped in such manner for constant engagement with all of the intake ports but which only periodically and selectively establishes communication between the intake and exhaust pipes with any one of the intake ports.

An end cap 42, threadedly engaged within the remaining attaching portion of the coupling 19, houses a compression spring 43 within a socket opening 44 within the innermost projecting end thereof. The spring is of the compression type and sprung at the opposed end convolutions thereof against the end wall of the valve 23 and end wall of the socket opening 44.

As generally known in the employment of the conventional forms of air valves only one port is employed and which is large enough to cause an emergency application of the brakes if the valve handle is moved the least bit too far.

Vith our improved type of valve the train can be handled as smoothly from rear of train when backing up as the engineer can with his brake valve, and with no danger of an undesired emergency application of the brakes. In actual practice, the service port 38 is initially registered with the intake port 24 in the sleeve 22, afterwards the holding port 39, and subsequently the emergency port whereby a gradual but positive stop may be actuated and which will not cause any degree of discomfort to the passengers in the coaches or toss the freight about in the baggage car.

Although we have shown, described and illustrated our invention as being primarily designed for application upon and for use in conjunction with the air brake systems of railway rolling stock, it is obviously understood that the valve structure could be equally and effectively as well applied for other purposes without departing from the spirit of the present invention.

The invention is susceptible of various changes in its form, proportions and minor details `of construction, and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.

Having thus described the invention, what is claimed is A valve .structure comprising a coupling having inlet and outlet pipes communicating therewith upon diametrically opposite sides thereof, said coupling having a bore rightangularly disposed with relation to the connection of the pipes therewith and in communication with the latter through restricted orifices, a sleeve carried within the bore of the coupling engaged circumferentially thereof and having small and large ports in constant communication through the restricted orifices with the inlet and discharge pipes respectively, a valve member telescopically associated for longitudinal movement within the sleeve having one end extended. exteriorly of the coupling, and said valve having a in ultilllityf elongated longitudinally extending radially disposed inlet ports and a common correspondingly disposed discharge port arranged for registration with the discharge pipe and large port to communicate any one of the inlet ports with the latter.

In testimony whereof we aflix our signatures.

HERBERT W. DURHAM. CHARLES M. RUCKER. 

